If you wish to provide discounts to the guest on particular days for which you have to create a Qualification Criterion and add the Receipt Qualifier: Receipt Day as a field.
When we click on the Receipt Day and here we can enter the dates like 9,16,19,24,31
After adding the Receipt Day the receipt qualifier will look as the screenshot attached below.
Update the QC and further it needs to be attached with the redeemable which can be further added to the campaigns for gifting purpose where the guest will be able to use the reward only on the mentioned dates.
If further assistance is required, submit a ticket to Punchh Support. (For help submitting a ticket, click here)